SPOTDIR

The SPOTDIR card is used in conjunction with SPOTBEAM, SPOTPOS SPOTTIME and SPOTTRAN to define multiple beam spots. A new primary is created randomly in any of the listed beam spots according to their respective weight or in sequential order. See SPECSOUR SPECSOUR.

Warning : These five cards are activated by indicating SDUM = BEAMSPOT in the SPECSOUR card. Barring this, the spot cards will be discarded.

See also SPOTBEAM, SPOTPOS, SPOTTIME, SPOTTRAN

WHAT(1)

x-cosine of the beam spot

Default

see below

WHAT(2)

y-cosine of the beam spot

Default

see below

WHAT(3)

z-cosine of the beam spot

Default

see below

WHAT(4)

x-cosine of the beam “x-axis”

Default

see below

WHAT(5)

y-cosine of the beam “x-axis”

Default

see below

WHAT(6)

z-cosine of the beam “x-axis”

Default

see below

SDUM

beam spot number (free format)

Default

\(n\), the number of the last defined spot

Notes

1. If WHAT(1)=WHAT(2)=WHAT(3)= 0, the beam direction as defined by BEAMPOS is used.

2. If WHAT(4)=WHAT(5)=WHAT(6)= 0, the beam x-axis direct- ion as defined by BEAMPOS/BEAMAXES is used, if the beam x-axis is indeed defined, the beam z-axis is the beam direction and the y-axis is computed accordingly

3. If no SPOTDIR card is issued for an otherwise (via SPOTBEAM) defined beam spot, the spot direction and axes are taken from the BEAMPOS and BEAMAXES cards, assuming the beam along the z-axis of the beam reference frame